LOS ANGELES (AP) - Shoehorned into a small living room in a South Los Angeles apartment, a dozen parents discuss why their kids' school ranks as one of the worst in the nation's second-largest school district.The answers come quickly: Teachers are jaded; gifted pupils aren't challenged; disabled students are isolated; the building is dirty and office staff treat parents disrespectfully."We know what the problem is - we're about fixing it," said Cassandra Perry, the Woodcrest Elementary School parent hosting the meeting. "We're not against the administrators or the teachers union. We're honestly about the kids."School parent groups are no longer …